Method of filling liquid crystal display panel with liquid crystal and liquid crystal filling system performing the same

Abstract

In a method of filling a liquid crystal display panel with liquid crystal and a liquid crystal filling system using the method, a seal line and spacers are formed on a color filter substrate. A first volume defined by the seal line and a second volumes defined by the spacers are obtained. An amount of liquid crystal to be supplied into a region enclosed by the seal line is precisely calculated based on the first and second volumes. Shortage of the liquid crystal supplied into the LCD panel and overflow of the liquid crystal can be avoided. Accordingly, the steps for supplying the liquid crystal into the LCD panel may be reduced, and simultaneously peripheral regions of the LCD panel be prevented from being contaminated by the liquid crystal while the liquid crystal is filled into the LCD panel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application relies for priority upon Korean Patent Application No. 2002-33324 filed on Jun. 14, 2002, the contents of which are herein incorporated by reference in its entirety. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a method of filling a liquid crystal display panel with liquid crystal and a liquid crystal filling system for performing the same. [0004] 2. Description of the Related Art [0005] Generally, liquid crystal is interposed between a TFT substrate and a color filter substrate of a liquid crystal display panel. [0006] The liquid crystal is affected by an electric field formed between the TFT substrate and the color filter substrate. In detail, the liquid crystal varies the transmissivity of the light supplied from an external light source depending on the electric field applied thereto, so that full-color images required by users can be displayed. [0007] The TFT ...

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Benefits of technology

[0024] The present invention has been made to solve the above problems of the prior arts, therefore, it is a one feature of the present invention to provide a method of filling liquid crystal into a liquid crystal display panel, which reduces process failures such as shortage of the liquid crystal supplied into the liquid crystal display panel and overflow of the liquid crystal. In the method of filling the liquid crystal, process parameters influencing an amount of the liquid crystal to be supplied into the liquid crystal display panel may be precisely measured, the amount of the liquid crystal to be supplied is calculated based on the measured process parameters, and the calculated amount of the liquid crystal is supplied into the liquid crystal display panel.

[0025] In addition, it is a another feature of the present invention to provide a liquid crystal filling system that reduces process failures such as shortage of the liquid crystal supplied into the liquid crystal display panel and overflow of the liquid crystal. In the liquid crystal filling system, process parameters influencing an amount of the liquid crystal to be supplied may be precisely measured, the amount of the liquid crystal to be supplied is calculated based on the measured process parameters, and the calculated amount of the liquid crystal is supplied into the liquid crystal display panel.

[0029] As described above, according to the present invention, liquid crystal is filled between two substrates so that the number of the steps for sealing the liquid crystal can be reduced, and the processing time required for sealing the liquid crystal can be minimized. In addition, bubbles generated while the liquid crystal is insufficiently filled between two substrates can be reduced, and overflowing of liquid crystal due to excessive amount of liquid crystal can be prevented.

Problems solved by technology

However, an excessive amount of liquid crystal may be supplied into the cell gap.

However, according to the second liquid crystal filling method, bubbles are generated inside the liquid crystal display panel or the liquid crystal overflows the liquid crystal display panel.

For example, when an excessive amount of liquid crystal is supplied into the color filter substrate, the excessive amount of liquid crystal overflows outside of the liquid crystal display panel.

On the contrary, when the liquid crystal is insufficiently supplied into the color filter substrate, a bubble area is formed inside the liquid crystal display panel.

Since a random number of spacers are attached to the region enclosed by the seal line, measuring the total volume of the spacers is difficult.

For this reason, it is difficult to precisely calculate the total volume of the spacers.

Therefore, the amount of liquid crystal to be supplied may not be precisely calculated.

Therefore, it is difficult to precisely calculate the total volume of the spacers and the amount of liquid crystal to be supplied.

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